1247702 玫、發明說明 【發明所屬之技術領域】 本發明係關於安裝於育嬰車、兒童椅、嬰兒揹架（baby rack)等育嬰器具之用以形成座墊之座墊芯材，尤指安裝在 可切換為椅子狀形態與床狀形態之育嬰器具之座墊芯材。 【先前技術】 第1圖與第2圖係顯示曰本專利特開平8- 1 75395號公 報所揭示之育嬰車。此育嬰車！係具備：車體2 ;安裝於 该車體2用以形成座墊之座席吊網3。 育嬰車1之構成為··其可切換成第1圖所示之椅子狀 形態’以及第2圖所示之床狀形態。&外，雖未顯示於圖 中，摺疊狀態下之育嬰車i，其前後車輪接近，且因寬度 的縮小使得左右車輪亦得以接近。 第3圖係顯示以往使用之一般的座席吊網3。座席吊 網3係具備：&兒童背後支樓兒童背部的靠背面部4 ;從 下面支撐兒童臀部的座位面部5 ;在床狀形態下從靠背面 部4上端邊緣升起的頭部保護面部8 ;以及特別是在床狀 形態下從靠背面部4兩側邊升起的一對上方側面部7。 、比較第1圖與第2圖即可清楚地得知，育嬰車丨之構 成為··在床狀形態時可延長其座位面長度。兒童的腳部則 藉由該座位面延長部從下方支撐。座席吊、網3係具有形成 於該座位面延長部之搁腳面部6。在第丨圖所示之椅子狀 形恶下，形成座位面延長部之座席吊網3的搁腳面部6， 係朝下方下垂。 315319 6 1247702 第4圖為沿第3圖 示，在座席吊網3 、、、 所見之剖面圖。如該圖所 位面部5，分別收納員/保4面告"、#背面冑4以及座 以及座位面芯材5a。另頌—部保護面芯材8a、靠背面芯材4a 6，則沒有芯材，σ古 方面，在座席吊網3的擱腳面部 面部4的邊界部，以 ^ + 7丄位面部5與靠背 項如 罪背面部4與頭部伴士兹 界部，形成有縫製布料所構成 ：保遠面部8的邊 [專利文獻] 9、10。 日本專利特開平8—175395號公報。 [發明所欲解決之問題] 育嬰車1的車體2彳系目士 方拉出之座位面延長構件座位面切構件向前 態下之座位面向；該延長構件即可使床狀形 月J乃之長。座位面延長 製的平板狀形態。在該樹腊製平板狀座位面延：例為樹脂 因形成有凸肋或凹陷，而 面之長構件上， 其他範例之座位面延長構件係具備狀。 件兩側部向前方伸出之一對側部拉出才'广座位面支撐構 部拉出桿之間的柔軟帶件。 干，以及延伸一對側 育嬰車1變換為床狀形態時， 6會在上述座位面延長構件上延伸 網3的擱腳面部 製的縫製布料，因此樹脂製平板 ’、’、搁腳面部6為布 狀的觸感會直接傳到兒童的腿部或腳部。、長構件凹凸形 帶件從下方支撐擱腳面部6之方式，因 匕外，以柔軟的 題，而無法穩定地支撐兒童的腿部或腳^住下掉落的問 315319 7 1247702 另再參昭馀β ^ a立 “、、第4圖即可明瞭，習知育嬰車1之所以造成 兒重不舒服夕広 八 5，與布g、 q原因’係在具有座位面芯材5a的座位面部 一 製縫製布料所構成的搁腳面部6之間，會有相當於 芯材厚声的古乂 曰月π田么 又、低差。此高低差的存在，會帶給兒童不舒適。 同樣地，以链制+ 聲I布料所形成的絞鏈部9亦會形成較大的凹1247702 玫,发明说明 [Technical Field] The present invention relates to a seat cushion core material for forming a seat cushion, such as a baby carriage, a child chair, a baby rack, and the like. It is mounted on a seat cushion core material that can be switched to a chair-like form and a bed-like form. [Prior Art] Fig. 1 and Fig. 2 show a baby carriage disclosed in the publication of Japanese Laid-Open Patent Publication No. Hei No. Hei 8- 1 175 395. This baby carriage! The utility model comprises: a vehicle body 2; and a seat hanging net 3 installed on the vehicle body 2 for forming a seat cushion. The configuration of the baby carriage 1 is switched to the chair-like form shown in Fig. 1 and the bed-like form shown in Fig. 2. Outside of &, although not shown in the figure, the baby carriage i in the folded state has its front and rear wheels approaching, and the left and right wheels are also approached due to the reduction in width. Fig. 3 shows a general seat net 3 that has been used in the past. The seat hanging net 3 system has: a backrest face 4 of the child's back in the back of the child; a seat face 5 supporting the child's buttocks from below; a head protecting face 8 raised from the upper end edge of the backrest face 4 in a bed-like form; And a pair of upper side portions 7 rising from both sides of the backrest portion 4 in a bed-like configuration. By comparing Fig. 1 with Fig. 2, it can be clearly seen that the structure of the baby carriage is such that the length of the seat surface can be extended in the bed form. The child's foot is supported from below by the seat surface extension. The seat hanger and the net 3 have a footrest portion 6 formed on the seat surface extension. In the chair shape shown in Fig. 1, the footrest portion 6 of the seat net 3 forming the seat surface extension portion is lowered downward. 315319 6 1247702 Figure 4 is a cross-sectional view of the seat net 3, , and as seen along the third figure. As shown in the figure, the face 5 is stored in the holder/protection 4 face ", #back胄4 and the seat and the seat core member 5a. In addition, the protective surface core material 8a and the back surface core material 4a6 have no core material, and the σ ancient aspect is at the boundary portion of the footrest surface portion 4 of the seat hanging net 3, and the surface portion 5 is The backrest item is composed of a sewn fabric, such as the sin back portion 4 and the head portion, and is formed by a sewn fabric 8 [Patent Document] 9,10. Japanese Patent Laid-Open No. Hei 8-175395. [Problem to be Solved by the Invention] The body of the baby carriage 1 is a seat surface extension member of which the seat surface extension member is pulled out, and the seat facing member in the forward state; the extension member can make the bed shape month J is the longest. The flat shape of the seat surface is extended. In the case of the flat-shaped seat of the tree wax, for example, a resin having a rib or a depression is formed on the long member, and other examples of the seat surface extending member are provided. One side of the piece protrudes forwardly from the side to the side to pull out the soft band between the pull-out bars of the wide seat support structure. When the dry and the pair of side nursery carts 1 are converted into a bed-like form, the sewing fabric made of the footrest surface of the net 3 is extended on the seat surface extension member, so that the resin plate ', ', the foot rest face 6 The cloth-like touch will be transmitted directly to the child's leg or foot. The long member concavo-convex belt member supports the footrest portion 6 from below, because of the softness, and cannot stably support the child's leg or foot and fall down. 315319 7 1247702 Zhao 馀 β ^ a stand ",, the fourth picture can be made clear, the reason why the child care car 1 caused the child is uncomfortable 広 広 eight 5, with the cloth g, q reasons ' tied in the seat with the seat core 5a There is a difference between the footrest surface 6 formed by the face-sewn fabric and the low-pitched sound of the core material. The presence of the height difference will bring discomfort to the child. Ground, the hinge portion 9 formed by the chain + acoustic I cloth will also form a large concave
部’而給分啬盤A 口兄里帶來不舒服。 【發明内容】 、本發明之目的為提供一種座墊芯材，在將育嬰器具變 換為床狀形態日夺，可藉由該座墊芯材使整個床面形成勻順 的平面。 [解決課題之手段] 切換為椅子 之座墊芯 芯材係連接 下支撐兒童 足部之擱腳 靠背面部得 與擱腳面部 部之第2絞 材係安裝在可 用以形成座墊 配置，該座墊 靠背面部；由 由下支撐兒童 之邊界部，使 位於座位面部 於前述座位面 本發明之育嬰器具之座墊芯 狀形態與床狀形態之育嬰器具上 材，且其係與育嬰器具本體分離 具備有：由背後支撐兒童背部之 臀部之座位面部；在床狀形態下 面。卩’位於靠背面部與座位面部 以進行傾斜動作之第1絞鏈部； 之邊界部’使搁腳面部得以彎曲 鏈部。 根據上述構造，座墊芯材因具有與座位面部相連的搁 腳面部，故在座位面部與搁腳面部之間不會有高低差。此 外，由於搁腳面部係由芯材所構成，因此即使座位面延長 構件具有凹凸形狀，或其係由帶件所構成者，兒童既不會 感叉到凹凸形狀的觸感，而搁腳面部分也不會掉落。此外， 315319 8 1247702 由於靠背面部芯材與座位面部芯材互相連接， 邱八+ 队仕具遺界 口丨刀亦不會形成大的凹部。 在其中一個實施形態中，靠背面部、座位面部、擱腳 面部、第1絞鏈部與第2絞鏈部，係使用共通的構件一體 :型。此時，$ 1絞鏈部以及第2絞鏈部，例如係藉由： 〆'•亥心材厚度之方式而形成。舉例來說此座墊芯材為一片 合成樹脂製的板狀體。若以上述方式構成座墊芯材，則僅 以極簡早的結構，即可提供足以使坐於座墊上的兒童感到 十分舒適愉快的床面。 其他實施形態中，帛i絞鏈部可包含貼在靠背面部盘 座位面部之間的抵接部的第i絞鏈帶，而帛2絞鏈部則包 含貼於座位面部與擱腳部之間的抵接部的第2絞鏈帶。即 使在該情況下，亦可保持形成靠背面部之芯材與形成座位 面部之芯材以及形成擱腳面部之芯材之間的連接性，而提 供勻順的床面。 於理想實施形態中，座塾芯材連接具備：在床狀形態 下，可從靠背面部上端邊緣升起之頭部保護面部；以及: 於靠背面部與頭部保護面部之邊界部，使頭部保護面部得 以進行升起動作之第3絞鏈部。根據該構造，利用與靠背 面部相連之頭部保護面部之芯材，即可保護兒童頭頂部， 在安全面上更為理想。 一更理想的實施形態中，座墊芯材可再連接具備在床狀 形恶:從罪背面部兩側邊緣升起的—對上方側面部，以及 位於靠背面部與各上方侧面部之邊界部，可使上方側面部 315319 9 1247702 第4絞鏈部。根據以上所述之構造，藉由 的上方側面部之芯材即可保護兒童頭頂 #，故在安全面上更為理想。 如為縮小官碎古a σ1 以丨〜 向尺寸之可摺疊式育嬰器具，為了能 夠縮小覓度方向的尺寸， 目 寸理心上座位面部以連接具備有： 中央座位面部；；查垃^ ^ + ;中央座位面部兩側邊之一對側方座 位面部，位於中本成 、座位面邛與各側方座位面部之邊界部， ^各側方座位面部得以往中央座位面部彎曲之第5絞鏈部 根據上述構造，可在使用狀態時形成寬廣面積的座 位面部，並在摺疊時縮小寬度方向的尺寸。 依照與上述實施形態相同之觀點，在另一實施形態 中搁腳面#連接具備有：中央搁腳面部；連接於中央掷 腳面部兩側邊之—對的側方搁腳面部；位於中央擱腳面部 與各側方擱腳面部之邊界部，使各側方搁腳面部得以對中 央擱腳面部進杆蠻曲無从 I适仃弓曲動作之第6絞鏈部。根據該構造，在 使用狀悲日寸可形成寬廣面積的搁腳部，並在摺疊時縮小寬 度方向的尺寸。 1嬰器具包含有育嬰車、兒童椅、嬰兒揹架等。在其 的貝施形態中，座墊芯材係安裝於育嬰車。此時，例如， 座墊芯材係、放人於育嬰車的座席吊網。在另—實施形態 中亦可將座墊芯材安裝於育嬰車之車體，並在該座墊芯 材上安裝座席吊網。 【實施方式】 參照第5圖至第8圖說明本發明之一實施形態。第5 10 315319 1247702 圖為座墊芯材20的平面圖、篦ή同达、丨斤 丁 w 口弟6圖為沿第5圖之6_6線所 見之剖面圖，第7圖為表示在椅子 你何于狀悲下使用之視圖，第 8圖為表示在床狀形態下使用之視圖。 圖示的座墊料20，例如為可放入育嬰車之座席吊網 之芯材。在另一實施形態中，座墊芯材2〇亦可安裝於育嬰 車之車體’並在該座墊芯材上安裝座席吊網。 育嬰車可切換為椅子狀形態與床狀形態。座墊芯材 2〇 ’可與育嬰車車體分開化 J丨口乃』配叹，其可放入座席吊網， 或是安裝於車體而形成座墊。 座墊心材20 ’例如為由合成樹脂形成的i片平板，座 藝芯材連接具備有：面部21;座位面部a搁腳面部 I3,弟1絞鏈部24 ;第2絞鏈部25;頭部保護面部26; 第:鏈27，一對上方側面部28以及第*絞鍵部μ。 靠背面部21形成有可自背後支撐兒童背部之部分，座 位面部22形成有可自下方支撐兒童臀部之部分。靠背面部 21’舉例來說’利用減少樹脂厚度而形成薄壁的第i絞鏈 部24而連接於座位面部22。因此，如第7圖所示，在椅 子狀形態下使用時，素北二& 罪月面邛21係從座位面部22的後端 邊緣升起，此外在第8 — 隹弟8圖所不之床狀形態下使用時，靠背 面部21與座位面部22伸展成幾近水平狀。 ，搁腳面邛6 ’如第8圖所示，在床狀形態下使用時， 形成可從下方支撐兒童腳部的部份。另-方面，如第7圖 所不，在椅子狀形態下使用時，其可由座位面部22前端邊 緣向下方彎曲。第2絞鏈部25,係可使搁腳面部6進行彎 11 315319 1247702 ^ jLj^ ,λ 薄壁部所構成:舉例來說，其係由減少樹脂厚度而形成之 頭部保護面部26，如坌7闰抓-, 用時 々弟7圖所不，在椅子狀形態下使 :罪月面部2丨形成連續向上方延伸之平面，在第 :所:之在床狀形態下使料，由靠背面部^上端邊緣 部；保4兒童的頭頂部。帛3絞鏈部27，可使頭部保護面 邱张進仃起動作’其係由例如減少樹脂厚度而形成的薄壁 哔所構成。 土北對上方側面部28 ’尤其在床狀形態下使用時，可從 *月面部21的兩側邊緣升起以保護兒童的側頭部。第4 絞鏈部使上方側面部28得以進行升起動作，其係由 列如以減树脂厚度而形成的薄壁部所構成。 圖不之座墊芯材2〇，舉例來說，可適用於以擅疊方式 縮小寬度尺寸之育嬰車。為達成縮小寬度方向之尺寸，座 位面部22係具備：中央座位面部仏;利…絞鏈部30 而連接於中央座位面部22a兩側邊緣之一對側方座位面部 咖。第5絞鏈部則在摺疊育嬰車時，使各側方座位面 部22b得以彎曲於中央座位 1 之構件，其係由例如 減少樹脂厚度而形成之薄壁部所構成。 同樣的，為達到縮小穹声士 ^ 少 j見度方向之目的，搁腳面部23 係具備有：中央搁腳面部23a;利用第“交鏈部31而連接 於此中央擱腳面部23a兩側邊緣—對側方擱腳面部心 第6絞鏈部31係在摺疊育嬰車時，使各側方座位面部w 得以f曲於中央座位面部23a之構件，其係由例如減少樹 315319 12 1247702 脂厚度而形成之薄壁部所構成。 卜在圖示之實施形態中，第！至第6絞鍵部，均由樹脂 4壁部所構成。在此情況下，為達到所希望之彎曲方向， 理想上如第6圖所示，在第1絞鏈部24以及第3絞鍵部 27中，係從座墊芯材20的背面側開設切槽，而第2絞鏈 部25則從表面側開設切槽。雖無圖示，但第4絞鏈部”， 理想上以從座墊芯材2〇的背面側開設切槽較佳。至於第5 :鏈部30以及第6絞鏈部31，則視所採用摺疊機構之型 態而決定切槽的位置。舉例來說，侧方座位面部2孔以及 側方搁腳面部23b在摺疊時會朝後方彎曲之構件時，切槽 則開設於座墊芯材的表面側。 根據以上說明及圖示的座墊芯材，在床狀形態下使用 呀由於形成罪背面部之芯材、形成座位面部之芯材以及 形成擱腳面部之芯材一體成型且連接延伸，故得以使整體 形成勻順之平面。換言之，可提供兒童舒適的床面。 此外，第5至第8圖所示為例示性的實施形態。因此， 對於圖中所示的實施形態，可在與本發明相同之範圍内， 或是均等之範圍内進行各種修正或變形。以下列舉幾個例 示性說明。 (1 )座墊心材可為放入育嬰車座席吊網之芯材，或為可直 接安I於月嬰車車體的芯材。後者的情況，例如座席吊網 可安裝於座墊芯材上。 (2 )在圖不之實施形態中，座墊芯材係以i片平板形成。 在其他實施形態中，可使用複數芯材，並在上述芯材的抵 315319 13 1247702 接部貼上絞鏈帶。具體而言’使形成靠背面部之怎材與形 成座位面部之芯材在端面對接，並在該抵接部貼上第"交 鏈帶。再來，使形成座位面部芯材與形成搁腳面部之芯材 在端面對接，並在該抵接部貼上第2絞鏈帶。藉由上述之 構成，亦可使整體床面形成勻順的平面。 (3) 座墊芯材也有可能不具備頭部保護面部％以及一對 上方側面部2 8。 (4) 若育嬰車為摺疊狀態下其寬度方向不會收縮之類型， 則可省略座位面部與擱腳面部的絞鏈部3 〇以及3 1。 (5 )可適用本發明之座墊芯材之育嬰器具，並不偈限於育 嬰車，其亦包含兒童椅與育嬰揹架等。亦，本發明可廣 泛適用於可切換為椅子狀形態與床狀形態的育嬰器具。" 【圖式簡單說明】 第1圖為日本專利特開平8 _丨7 5 3 9 5號公報所揭示育 車之斜視圖。 圖第2 ^為將第1圖之育嬰車變換為床狀形態時之斜視 第3圖為顯示習知一般的座席吊網之平面圖。 第4圖為沿著第3圖之4-4線所見之剖面圖。 第5圖為本發明一實施形態的平面圖。 第6圖為沿著第5圖之6-6線所見之剖面圖。 第7圖為呈椅子狀形態之座墊芯材斜視圖。 第8圖為呈床狀形態之座墊芯材斜視圖。 315319 14 1247702 1 育嬰車 2 車體 3 座席吊網 4、21 靠背 5 > 22 座位面部 4a 靠背 5 a 座位面芯材 6、23 搁腳 8、26 頭部保護面部 8a 頭部 9、10 絞鏈部 20 座墊 22a 中央座位面部 22b 側方 23a 中央擱腳面部 23b 側方 24 第1絞鏈部 25 第2 27 第3絞鏈部 28 上方 29 第4絞鏈部 30 第5 31 第6絞鏈部 面部 面芯材 面部 保護面芯材 芯材 座位面部 擱腳面部 絞鏈部 側面部 絞鏈部 15 315319The Department’s brought discomfort to the brother of the A. SUMMARY OF THE INVENTION It is an object of the present invention to provide a seat cushion core material which can be used to form a smooth surface of the entire bed surface by converting the baby care implement into a bed-like form. [Means for Solving the Problem] Switching to the seat core of the chair is connected to the footrest backrest supporting the child's foot and the second stranding of the footrest is installed to form a seat cushion configuration. a mat backrest surface; the bottom portion of the child is supported by the lower portion, and the seat surface of the baby-care device of the present invention is placed on the seat surface at the seat surface, and the baby-care device of the bed-shaped form is attached to the baby-care device, and the baby is attached to the baby-care device. The body of the device is separated from the seat surface of the buttocks supporting the back of the child by the back; under the bed shape.卩' is the first hinge portion that is located on the backrest surface and the seat surface to perform the tilting operation; and the boundary portion' allows the footrest portion to bend the chain portion. According to the above configuration, since the seat cushion core has the footrest portion connected to the seat portion, there is no difference in height between the seat portion and the footrest portion. Further, since the footrest portion is constituted by the core material, even if the seat surface extension member has a concavo-convex shape, or is constituted by the belt member, the child does not feel the touch to the uneven shape, and the footrest portion It will not fall. In addition, 315319 8 1247702 Because the backrest core material and the seat core material are connected to each other, Qiu Ba + Team has no large recesses. In one embodiment, the backrest portion, the seat portion, the footrest portion, the first hinge portion, and the second hinge portion are integrally formed using a common member. In this case, the $1 hinge portion and the second hinge portion are formed, for example, by the thickness of the core material. For example, the cushion core material is a sheet of synthetic resin. If the seat cushion core member is constructed in the above manner, it is possible to provide a bed surface which is sufficient for the child sitting on the seat cushion to feel comfortable and pleasant only with a very simple structure. In other embodiments, the 帛i hinge portion may include an ith hinge strap attached to an abutment portion between the seat surface portions of the backrest faceplate, and the 帛2 hinge portion includes a affixed between the seat portion and the footrest portion. The second hinge strap of the abutment. Even in this case, it is possible to maintain the connection between the core material forming the backrest portion and the core material forming the seat surface and the core material forming the footrest portion, thereby providing a smooth bed surface. In a preferred embodiment, the seat core material connection has: a head protection face that can be raised from the upper end edge of the backrest face in a bed form; and: a head portion at the boundary between the backrest face and the head protection face The third hinge portion that protects the face from the lifting action. According to this configuration, the head of the face can be protected by the head attached to the backrest face to protect the head of the child, which is more desirable on a safe surface. In a more preferred embodiment, the seat cushion core material can be reconnected to have a bed-like shape: the upper side portion rising from the both side edges of the sin back portion, and the boundary portion between the backrest portion and each of the upper side portions The upper side portion 315319 9 1247702 can be the fourth hinge portion. According to the above configuration, the core of the upper side portion can protect the head # of the child, so that it is more desirable on the safety surface. In order to reduce the size of the officially broken ancient a σ1 to the size of the foldable baby-care device, in order to reduce the size of the twist direction, the seat on the seat is connected with: a central seat face;; ^ + ; one side of the side of the central seating area, the side of the seat, located at the boundary between the center of the seat, the seat and the side of the seat, ^ each side of the seat has the fifth central part of the face bending According to the above configuration, the hinge portion can form a wide-area seat surface in the use state and reduce the size in the width direction when folded. According to another aspect of the embodiment, in another embodiment, the footrest surface # is connected with a central footrest surface; a pair of side footrests connected to both sides of the center throwing foot portion; and a central footrest The boundary between the face and each side of the footrest surface enables each side of the footrest face to be swayed to the center of the footrest face by the sixth hinge portion. According to this configuration, a wide area of the footrest can be formed in the use of the shape, and the size in the width direction can be reduced when folded. 1 baby equipment includes a baby carriage, a children's chair, a baby back frame, and the like. In its Besch form, the seat core is attached to the nursery. At this time, for example, the seat cushion core material is placed on the seat net of the baby carriage. In another embodiment, the seat cushion core material may be attached to the body of the baby carriage, and a seat net may be attached to the seat cushion core material. [Embodiment] An embodiment of the present invention will be described with reference to Figs. 5 to 8 . 5th 10 315319 1247702 The picture shows the plan view of the seat cushion core material 20, the same figure of the same, the figure of the mouthpiece 6 is the section view taken along line 6_6 of the fifth figure, and the figure 7 shows the chair in the hall. The view used in the case of sadness, and the figure 8 shows the view used in the bed form. The seat cushion 20 shown in the figure is, for example, a core material that can be placed in the seat net of the baby carriage. In another embodiment, the seat cushion core member 2 can be attached to the body of the baby carriage and a seat net is attached to the seat core. The baby carriage can be switched to a chair shape and a bed shape. The seat cushion core material 2〇 ’ can be separated from the car body. The J 丨 mouth is a sigh, which can be placed in the seat net or mounted on the car body to form a seat cushion. The seat cushion core material 20' is, for example, an i-piece flat plate formed of a synthetic resin, and the seat core material is provided with a face portion 21, a seat portion a footrest portion I3, a brother 1 hinge portion 24, a second hinge portion 25, and a head. The protective surface portion 26; the chain 27, the pair of upper side portions 28, and the *th twisted portion μ. The backrest portion 21 is formed with a portion that can support the back of the child from the back, and the seating portion 22 is formed with a portion that can support the buttocks of the child from below. The backrest portion 21' is connected to the seat portion 22 by, for example, forming a thin-walled i-th hinge portion 24 by reducing the thickness of the resin. Therefore, as shown in Fig. 7, when used in a chair-like configuration, the Subei II & Sin Moon 邛 21 is raised from the rear edge of the seat portion 22, and is not in the 8th - 8th When used in a bed-like form, the backrest portion 21 and the seat portion 22 are stretched to be nearly horizontal. The footrest 邛6 ’, as shown in Fig. 8, forms a portion that can support the child's foot from below when used in a bed-like configuration. On the other hand, as shown in Fig. 7, when used in a chair-like form, it can be bent downward by the front end edge of the seat portion 22. The second hinge portion 25 is configured to bend the footrest portion 6 by a thin portion λ319 1247702 ^ jLj^ , λ: for example, it is a head protecting portion 26 formed by reducing the thickness of the resin, such as坌7闰抓-, when using the time of the 7th figure, in the chair-like form: the sin-moon face 2丨 forms a plane extending continuously upwards, in the first: the bed-shaped form, the backrest Facial ^ upper end edge; protect 4 children's head top. The 绞3 hinge portion 27 can be formed by a thin-walled cymbal formed by reducing the thickness of the resin, for example. When the north side faces the upper side portion 28', particularly in the bed-like configuration, it can be raised from both side edges of the *month face portion 21 to protect the child's side head. The fourth hinge portion is configured to raise the upper side surface portion 28 by a thin portion formed by reducing the thickness of the resin. The seat core material 2〇, for example, can be applied to a baby carriage that is narrowed in width by a smattering method. In order to achieve a reduction in the size in the width direction, the seat surface portion 22 is provided with a center seat portion 仏, and a hinge portion 30 connected to one of the side edges of the center seat portion 22a and the side seat portion. The fifth hinge portion is formed by bending a side seat portion 22b of each of the side seat portions 22b to a member of the center seat 1 by folding a baby carriage, for example, a thin portion formed by reducing the thickness of the resin. Similarly, in order to achieve the purpose of reducing the direction of the cymbal cymbal, the footrest portion 23 is provided with a central footrest portion 23a, and is connected to both sides of the central footrest portion 23a by the first "interlinking portion 31". The edge-to-side side footrest portion 6th hinge portion 31 is a member that folds each side seat surface w to the central seat portion 23a when the baby carriage is folded, for example, by reducing the tree 315319 12 1247702 The thin portion formed by the thickness of the grease is formed. In the embodiment shown in the drawings, the first to sixth twisted portions are each formed by the wall portion of the resin 4. In this case, the desired bending direction is achieved. Preferably, as shown in Fig. 6, in the first hinge portion 24 and the third hinge portion 27, a slit is formed from the back side of the seat cushion core member 20, and the second hinge portion 25 is from the surface. The slit is formed in the side. Although not shown, the fourth hinge portion is preferably formed by slitting from the back side of the cushion core member 2A. As for the fifth chain portion 30 and the sixth hinge portion 31, the position of the slit is determined depending on the type of the folding mechanism. For example, when the side seat surface portion 2 and the side footrest portion 23b are bent toward the rear when folded, the slit is formed on the surface side of the seat cushion core. According to the seat cushion core material described above and illustrated, it is used in a bed form, and since the core material forming the sin back portion, the core material forming the seat surface portion, and the core material forming the footrest portion are integrally formed and connected and extended, Make the whole form a smooth plane. In other words, a comfortable bed for children is available. Further, the fifth to eighth figures are illustrative embodiments. Therefore, various modifications and changes can be made in the embodiments shown in the drawings and the scope of the invention. A few illustrative examples are listed below. (1) The seat cushion core material may be a core material placed in the net of the baby carriage seat, or a core material which can be directly connected to the body of the infant car. In the latter case, for example, the seat net can be mounted on the seat core. (2) In the embodiment of the drawing, the seat cushion core material is formed by an i-plate. In other embodiments, a plurality of core materials may be used, and a hinge strip is attached to the joint of the core material 315319 13 1247702. Specifically, the material forming the backrest surface and the core material forming the seat surface are butted against each other, and the "link" is attached to the abutting portion. Then, the core material forming the seat surface portion and the core material forming the footrest portion are butted against each other, and the second hinge belt is attached to the contact portion. According to the above configuration, the entire bed surface can be formed into a smooth plane. (3) The seat cushion core may not have the head protection face % and the pair of upper side portions 28 . (4) If the baby carriage is of a type in which the width direction does not contract in the folded state, the hinge portions 3 〇 and 31 of the seat surface and the footrest portion can be omitted. (5) A baby-care device to which the seat cushion core material of the present invention can be applied is not limited to a baby-care vehicle, and includes a child chair and a nursery back frame. Further, the present invention can be widely applied to a baby-care device that can be switched to a chair-like form and a bed-like form. " [Simple description of the drawing] Fig. 1 is a perspective view of the vehicle disclosed in Japanese Patent Laid-Open No. Hei 8 _ _ 7 5 3 9 5 . Fig. 2 is a squint when the baby carriage of Fig. 1 is converted into a bed-like form. Fig. 3 is a plan view showing a conventional seat hanging net. Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3. Fig. 5 is a plan view showing an embodiment of the present invention. Fig. 6 is a cross-sectional view taken along line 6-6 of Fig. 5. Figure 7 is a perspective view of the seat core of the chair. Figure 8 is a perspective view of the seat core material in a bed form. 315319 14 1247702 1 Baby carriage 2 Body 3 Seat hanging net 4, 21 Backrest 5 > 22 Seat face 4a Backrest 5 a Seat core material 6, 23 Footrest 8, 26 Head protection face 8a Head 9, 10 Hinge portion 20 Seat cushion 22a Central seat surface portion 22b Side 23a Central footrest portion 23b Side 24 First hinge portion 25 Second 27 Third hinge portion 28 Upper 29 Fourth hinge portion 30 No. 5 31 No. 6 Twisted part facial face core material face protection surface core material core seat face footrest face hinge part side hinge part 15 315319